hardware:gretunnel
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On the gateway machine
ip tunnel add gre1 mode gre remote 192.168.2.99 local 192.168.2.81 ttl 255 ip link set gre0 up ip link set gre1 up ip addr add 10.10.10.81/24 dev gre1
Confirm the route is present
ip route 10.10.10.0/24 dev gre1 proto kernel scope link src 10.10.10.99 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown 192.168.2.0/24 dev enp2s0 proto kernel scope link src 192.168.2.99
Use IPTables to NAT to the remote GRE
iptables -t nat -A PREROUTING -p udp --dport 5111 -j DNAT --to-destination 10.10.10.99:5111
On the Trisul probe machine
ip tunnel add gre1 mode gre remote 192.168.2.81 local 192.168.2.99 ttl 255 ip link set gre1 up ip addr add 10.10.10.99/24 dev gre1
Credits
Creating a GRE tunnel http://ask.xmodulo.com/create-gre-tunnel-linux.html
hardware/gretunnel.1546693623.txt.gz · Last modified: 2019/01/05 18:37 by veera